Trane heat pump soft lockout. System in in heat mode. Outdoor air temperature sensor failure 11. The initial step is to check the pressures. When I touch the coils, they are at room temperature. Gas heat failure 8. Unlike a hard lockout, which requires manual intervention or professional service, a soft lockout usually clears automatically after a cooldown or reset period. Some safeties that cause a hard lockout are rollout switches, many high-limit Sep 1, 2025 · A Trane heat pump soft lockout is a protective state where the system limits compressor or reversing valve operation without fully shutting down the unit. This usually happens when the system detects a problem that could cause damage or harm, such as an overheating condition. Phone call A soft lockout can often be caused by a faulty compressor, a sensor issue, or most commonly, a low refrigerant problem. 5 flashes for soft lock out. A 5-red flash on a Trane heat pump indicates a defrost soft lockout, often caused by sensor faults or wiring issues. The LED indicators initially show soft lockout (low pressure) and later display manual lockout (low Heat pump troubleshooting may require simple a fix like changing the air filters. It was functioning well last year. Remember, this problem often comes from the compressor, temperature regulator, or the machine's connections. Mar 1, 2024 · A hard lockout begins the same way as a soft lockout but prevents the furnace from restarting the heat sequence again after the control board senses a tripped safety switch. Verify defrost termination sensors and ensure proper voltage supply. Common causes include low airflow, refrigerant issues, and system restrictions. This can happen if the thermostat is set incorrectly, there is a blockage in the air filter, or if the system is low on refrigerant. Understanding why soft lockouts occur, how they differ from hard lockouts, and ways to resolve and prevent them is crucial for homeowners and HVAC professionals. This means that not all heat pumps need to be locked out when auxiliary heat turns on. It will run for 15 minutes and then soft lock out on LP fault. Dec 10, 2024 · Trane heat pump soft lockout HP is a protective mechanism that temporarily disables the system when certain conditions are detected. 5TWR4036A1000AA. #hvac#trane#capacitor Customer: Hi, you helped me out about 2 weeks ago on my trane heat pump flashing a soft lookout code it's doing it again so I shut the power off for about 5 minutes and turned back on and the outside unit started and ran for about 2 minuts and shut off, When a RunTru heat pump runs emergency heat only and shows defrost controller errors, inspect the defrost board for faulty relays or sensor wiring issues. Dec 29, 2024 · Low ambient temperatures, frozen heat pumps or coils, high-pressure readings, dirty filters, refrigerant issues, or malfunctioning expansion valves could all cause the lockout. This winter, I noticed that when I turn it on, I can hear the unit running along with the fan, but it is not producing any heat. Nothing extraordinary here. Unlike a hard lockout that requires manual reset or technician intervention, a soft lockout typically resets automatically after a time delay or certain conditions clear. Discover what a furnace hard lock out is and how to fix it. In this video, Joshua talks about why heat pumps need to be locked out with certain HVAC system setups. This mechanism helps avoid damage from issues Fault code states "soft Contractor's Assistant chat Customer: The Trane heat pump's AC compressor runs for about three minutes and then stops. Soft lockouts often occur in cold temperatures, particularly below freezing. This is my first winter with this unit and I’m having a problem with the compressor locking out when temperature goes below about 10F. Jul 25, 2023 · Issue: What is Low Ambient Lockout? Resolution: This is a user enabled feature that prevents a unit from starting whenever the ambient temperature is below a specific setpoint. Understanding the Yeh, it’s another capacitor. But serious mechanical issues could require the help of a technician. Any ideas why the system would keep going into a hard lockout fault? Ambient temp is 57-73 when this happens, the past couple days it's done it 3 times. Soft Lockout 3rd LPCO trip = 4 hour (cooling), 18 hour (heating) Soft Lockout 4th LPCO trip = Hard Lockout Oct 2, 2023 · Faulty Temperature Regulator Trane heat pumps are equipped with temperature regulators that play a crucial role in maintaining the desired temperature output, whether manually or automatically set. Trust Trane® for expert HVAC advice and furnace troubleshooting tips. Dec 19, 2009 · I own a Trane 4TWX5048A (XL15i) Heat pump with electric auxiliary heats, all controlled with a Trane TCONT803 thermostat. Nov 14, 2023 · A Trane heat pump often displays a hard lockout alert due to low pressure switch engaging to open. These possible suspects include: Regulator Of Temperature Is Faulty Temperature regulators are a common feature in heat pumps, especially those made by Trane. Fault code states "soft Jan 27, 2025 · What Does Hard Lockout Mean on a Trane Heat Pump? If your Trane heat pump is locked out, it means that the system has been turned off and can’t be restarted until a qualified technician resets it. The young lad who wants to start a fire has given up and is waiting for someone to come along and help him get started again (that’s you). Dec 9, 2014 · Heat Pumps and Electric Home Heating - Trane heat pump lockouts - I live in Vancouver,BC and have a 1. 6. Customer: I have a vertical stack water-source heat pump model WSHP-IOM-2. Discharge air temperature failure on modulating heat and modulating reheat units 9. Defrost fault condition (heat pumps only) 7. These parts allow the appliance to output the correct temperature based on Aug 28, 2023 · Fixing the leading cause of your Trane heat pump encountering a soft lockout often starts by troubleshooting the appliance. The board is new because I was getting 2 fault codes at a time, LP and HP so Trane suggested changing the board because 2 pressure faults didn't seem right. The system is in heat mode, and the fault code indicates a "soft lock out" on both the compressor and condenser. When the temperature regulator malfunctions, it can lead to inaccurate temperature readings, triggering a soft lockout. This feature prevents damage to the heat pump but can be frustrating for homeowners. 5 ton Trane XL13c all electric heat pump. R410A system and my pressures are 100 low and 380 high. Using ecobee thermostats, it's a 2020 single stage heat pump on a zoned system. It's 2 years old and this is the first time it's had this issue. But, dang that’s a big condenser. The factory defau Heat Pump Soft Lockout: Causes, Symptoms, and Troubleshooting Strategies for Homeowners Trane Heat Pump Soft Lockout: Prevention and Repair Tips Contacting a qualified technician for diagnosis and repairs is crucial in addressing soft lockouts in Trane heat pumps. As this switch acts as a safety device, it shuts off the machine's operation when it detects a sudden drop in pressure within the system. Contractor's Assistant: Have you checked the thermostat settings? Also, what about the Jul 2, 2025 · A soft lockout on a trane heat pump occurs when the system temporarily shuts down due to an issue, but tries to restart after a short period. Jul 28, 2025 · What Is a Soft Lockout on a Trane Heat Pump? A soft lockout on a Trane heat pump is a protective mode that temporarily disables the system to prevent damage caused by operational faults. Entering evaporator temperature failure (on modulating reheat units) 13. Frostat active 10. Customer: I have a Trane heat pump that I'm having issues with. RTOM communication failure 14. Smoke detector active 12. Jan 18, 2024 · Issue: How to Lockout a Compressor or Circuit? Resolution: RTAC Compressor or Circuit Lockout information: Circuit Lockout - Circuit #1 and Circuit #2 Using the TechView or KestrelView service. Dec 16, 2022 · Trane Heat Pump: 4TWR3 Re: Flashing Code 4 Code 4 = 4 trips of the Low Pressure Control 1st LPCO trip = 15 min. Soft lockout 2nd LPCO trip = 30 min. Trane Heat Pump ac compressor kicks in for about 3 minutes then stops. Oct 24, 2022 · Reasons For Soft Lockout On A Trane Heat Pump Because of three potential causes, a Trane heat pump frequently displays a gentle lockout warning to its consumers. May 14, 2025 · A Trane heat pump soft lockout can disrupt home comfort and hint at underlying system issues. First, inspect the outdoor temperature sensor and defrost sensor for damage or disconnection. I also have the Trane XL 950 thermostat with outdoor sensor. Whenever this happens, I have to run Can’t get heat pump to activate Trane Heat Pump. czady ccnd rag8l ld fkxdc 7sz p1bozbp1 kesn6og my vbqc3eq